public class Xiti5 {
  public static void main(String args[]) {
     int m=8,item=m,i=1;
     long sum=0;
     for(i=1,sum=0,item=m;i<=10;i++) {
        sum=sum+item;
        item=item*10+m;
     }
     System.out.println(sum);
  }
}
